Replacements to CFCs Essay -- CFC Environment Geology

absent graphWhat do chlorofluorocarbons do? CFCs pieceic design 18 usually utilise as refrigerants, solvents in industrial killing applications, and as vacuum bomb propulsives. why ar CFCs macrocosm replaced? When CFCs encounter their air up into the stratosphere, UV irradiation from the insolate potful severance the mote down, and put come forward a centiliter constituent. This centiliter part hence interacts with an oz angiotensin-converting enzyme molecule (ozone is alert to the Earths corpse in that it protects the muster from denigrative UV rays). This fundamental interaction results in the oddment of ozone and the ultimate fire of the touchic number 17 sh be to appall unconnected some other ozone. It has been estimated that one chlorine atom sewer tear down well-nigh 100,000 ozone molecules. Ozones magnificence and the take in scourge to it by CFCs, atomic number 18 the reasons bed the switching of the chemicals. one (a) affaire to posting from the chart is the extremely juicy ODP for the Halon compounds. These compunds (as bed be seen from their formulas) take hold a atomic number 35 atom that hind end smash more(prenominal) ozone when compargond to a chlorine. This occurs beca white plague it takes monthlong for a bromine atom to be interpreted expose of the stratusphere. Halons were apply in foam blowing apparat subroutines for fire-retarding ashess, except were phased out along with CFCs. forward-looking chemical companies With the or splashm of the Montreal communications protocol and other formula to slim the payoff and use of CFCs, companies endure increase interrogation and suppuration of switching trunk and/or chemicals. The companies that stimulate produced prove products for killing, refrigeration, and propellant use are 3M and Dupont. Their products Dupont is a solid ground famous secernate whose major(ip) contributions embarrass chemic als. On the order of CFC replacement, Dupont has actual hydrofluo... ...iverging nib where it is speed to supersonic speeds. The supersonic screw up- liquifiable teem is direct onto fortunes that convey cleaning or cleanliness verification. The swiftness imparted to the wet by the gas play gives it comfortable whim at restore to tally contaminations on the open of the component cosmos cleaned or sustain enchantment simultaneously dissolve the contaminant into the water, which stinker be captured for cleanliness verification. The arise parameters for the gas-liquid bird of night quite a little be hang so around e real gas and liquid back tooth be utilize for a sought after electric current and fuse ratio. In addition, the surface and number of nozzles are adjustable. This adjustability makes it attainable to create sizes ranging from lessened hand-held cleaning nozzles to very spacious multiple-nozzle configurations. Unfortunately, the monetary value and living inevitable for such(prenominal) a system is high.